This number is a prime.

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Together with 191, this prime forms a palindromic Sophie Germain pair: i.e., 2(191)+1 = 383. Less known is the fact that 383 divides the Mersenne number 2^191-1. [De Geest]

Submitted: 2004-08-29 12:18:49;   Last Modified: 2008-01-30 11:28:00.
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